#include <myheader_c_plus.h>
#include <ctime>
#include <cstdlib>
using namespace std;
int main(int argc, char *argv[])
{
    //set
    set<int> nums;
    set<string> sting_set;
    srand(time(NULL));
    for(int i = 0; i < 10; i++){
        nums.insert(i);
    }


    for(auto it = nums.begin(); it != nums.end(); it++){
        cout << *it << " ";
    }
    nums.erase(9);

    cout << endl;

    return 0;

}

